Perhaps you should try some spelling variations:
trong chuan » thong chuan, trong chan, trong thuan
chieu xanh » chieu sach, chieu sang, chieu tinh
trung chua » trung cua, trung ha, trung hoa
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - thanh ((trung chua) or (trong chuan)) dang cong tam toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((trung chua) OR (trong chuan)) dang cong tam toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((trung chua) or (trong chuan)) dang cong tam toan tap*.